00465nam a2200169Ia 4500082002100000245005600021260002500077690000600102500000500108700000500113100001700118300001700135952010200152964001700254921000900271999001500280  a338.973bB967.PT  aProduction trends in the United States since 1870b  aNew YorkbNBERc1934  a   a  a  aBurns, A. F.  axxxii, 363p.  00104070aISIbISId1998-08-28l0o338.973 B967.PTpDP7347r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a7024  c7024d7024